<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>JS打印乘法口诀表</title>
  <style>
    span{
      display: inline-block;
      margin: 3px;
      width: 80px;
      height: 30px;
      line-height: 30px;
      text-align: center;
      border: 1px solid pink;
    }

  </style>
</head>
<body>
  <script>
    for(let i = 1; i <= 9; i++){
      for(let j = 1; j <= i; j++){
        document.write(`<span>${j}*${i}=${i*j} </span>`);
      }
      document.write('<br>');
    }




  </script>
</body>
</html>